CN103235471A - LCOS (liquid crystal on silicon) projection light machine - Google Patents
LCOS (liquid crystal on silicon) projection light machine Download PDFInfo
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- CN103235471A CN103235471A CN2013101361731A CN201310136173A CN103235471A CN 103235471 A CN103235471 A CN 103235471A CN 2013101361731 A CN2013101361731 A CN 2013101361731A CN 201310136173 A CN201310136173 A CN 201310136173A CN 103235471 A CN103235471 A CN 103235471A
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Abstract
The invention provides an LCOS (liquid crystal on silicon) projection light machine, which comprises a light source system, a light gathering system, an LCOS display system, a polarized light mechanism and an imaging amplification light path system, wherein the light source system, the light gathering system and the polarized light mechanism which are in sequential arrangement and have the center points sharing the same straight line form an illumination light path, the straight line where the center points of the light source system, the light gathering system and the polarized light mechanism are located is an illumination optical axis, the imaging amplification light path system, the polarized light mechanism and the LCOS display system which are in sequential arrangement and have the center points sharing the same straight line form an imaging light path, the straight line where the center points of the imaging amplification light path system, the polarized light mechanism and the LCOS display system are located is an imaging optical axis, the imaging optical axis is vertical to the illumination optical axis, the polarized mechanism equally divides a right angle formed by the light source system, the light gathering mechanism and the imaging amplification light path system, the imaging amplification light path system comprises an imaging lens and an amplification lens with the center points on the imaging axial axis, and the imaging lens is close to the polarized light mechanism. Compared with the traditional LCOS projection light machine, the LCOS projection light machine has larger projection area in aspect of the short projection distance.
Description
Technical field
The present invention relates to technical field of photoelectric instruments, particularly relate to a kind of LCOS projection ray machine.
Background technology
Along with LCOS(Liquid Crystal on Silicon) being used of display technique and led light source, make that the volume of LCOS projection ray machine is more and more littler, and develop into portable miniature LCOS projection ray machine gradually.Miniature LCOS projection ray machine generally adopts the one chip light engine, has advantages such as cost is low, volume is little, is with a wide range of applications.Miniature LCOS projection ray machine can be applied to the fields such as output demonstration of portable commercial projection, mini-session demonstration, personal cinema, open-air Display projector, Edutainment and digital product.Bring great convenience for people's work, study and life ﹠ amusement.But miniature LCOS projection ray machine also exists a lot of technical bottlenecks to capture, as, light after imaging, has bigger projected area at projector distance far away again after the modulation of LCOS display system (containing image-forming information).Have bigger projected area but traditional miniature LCOS projection ray machine can not be implemented on the short projector distance, thereby limited the further application of micro projection ray machine.
Summary of the invention
Based on this, be necessary to provide a kind of LCOS projection ray machine that can have bigger projected area at short projector distance.
A kind of LCOS projection ray machine comprises light-source system, optically focused mechanism, LCOS display system, polarisation mechanism and imaging amplification light path system; Wherein,
Be arranged in order and central point altogether described light-source system, described optically focused mechanism and the described polarisation mechanism of straight line constitute illumination path, the straight line at the central point place of described light-source system, described optically focused mechanism and described polarisation mechanism is lighting optical axis;
Be arranged in order and the described imaging amplification light path system of the common straight line of central point, described polarisation mechanism and described LCOS display system formation imaging optical path, the straight line that the central point place of light path system, described polarisation mechanism and described LCOS display system is amplified in described imaging is the imaging optical axis;
Described imaging optical axis is vertical with described lighting optical axis, and intersection point is the central point of described polarisation mechanism;
Described polarisation mechanism divides described light-source system, described optically focused mechanism and described imaging equally and amplifies the right angle that light path system constitutes;
Described imaging is amplified light path system and is comprised imaging len and the amplifying lens of central point on described imaging optical axis, the close described polarisation of described imaging len mechanism.
Among embodiment, described light-source system and the described optically focused mechanism spacing distance on described lighting optical axis is 0.57～0.97mm therein, and described optically focused mechanism and the described polarisation mechanism spacing distance on lighting optical axis is 6.0～8.0mm.
Therein among embodiment, described LCOS display system and the described polarisation mechanism spacing distance on described imaging optical axis is 4.7～5.7mm, described polarisation mechanism and the described imaging len spacing distance on described imaging optical axis is 2.0～5.0mm, and described imaging len and the described amplifying lens spacing distance on described imaging optical axis is 16.1～18.1mm.
Therein among embodiment, described light-source system comprises aluminium base and is fixed in LED lamp on the described aluminium base.
Therein among embodiment, the mode that described LED lamp screws by screw thread or the mode of welding are fixed on the described aluminium base.
Therein among embodiment, the spacer ring that described optically focused mechanism comprises non-spherical lens and is used for isolating described light-source system and compresses described non-spherical lens.
Therein among embodiment, described LCOS display system comprises fixed panel and is fixed in LCOS chip on the described fixed panel, and described fixed panel is provided with connector, and described connector is used for described LCOS chip is connected with external device.
Therein among embodiment, described polarisation mechanism is the DBEF diaphragm, and the thickness of described DBEF diaphragm is 0.25～0.55mm.
Among embodiment, described imaging len is positive lens therein, and focal length is 5.8mm; Described amplifying lens is negative lens, and focal length is-3.05mm.
When above-mentioned LCOS projection ray machine was worked, light-source system provided light, and light is projected in the polarisation mechanism after optically focused mechanism handles.The light of a certain polarization direction does not change the direction of propagation, directly sees through polarisation mechanism.The light of a certain polarization direction is after the reflection of DBEF diaphragm, perpendicular projection is to the LCOS display screen system, after the modulation of LCOS display screen system (containing image-forming information), reflex to the DBEF diaphragm and see through the DBEF diaphragm, arrive imaging len, after the imaging len imaging, imaging light (image) arrives amplifying lens, and output after amplifying lens amplifies, finish projection process.Because being used of imaging len and amplifying lens, thereby make above-mentioned LCOS projection ray machine have bigger projected area with respect to traditional LCOS projection ray machine at short projector distance.
Description of drawings
Fig. 1 is the schematic diagram of the LCOS projection ray machine in the embodiment;
Fig. 2 is the structural representation of the LCOS projection ray machine among Fig. 1;
Fig. 3 is the stereographic map of the LCOS projection ray machine among Fig. 2;
Fig. 4 is the part sectioned view of the LCOS projection ray machine among Fig. 3;
Fig. 5 is the rear view of the LCOS projection ray machine among Fig. 3.
Embodiment
For the ease of understanding the present invention, with reference to relevant drawings LCOS projection ray machine of the present invention is described more fully below.Provided preferred embodiment of the present invention in the accompanying drawing.But the present invention can realize with many different forms, be not limited to embodiment described herein.On the contrary, provide the purpose of these embodiment be make the understanding of disclosure of the present invention comprehensively thorough more.
Need to prove that when element is called as " being fixed in " another element, can directly can there be element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be to be directly connected to another element or may to have element placed in the middle simultaneously.
Unless otherwise defined, the employed all technology of this paper are identical with the implication that belongs to those skilled in the art's common sense of the present invention with scientific terminology.Employed term is not intended to be restriction the present invention just in order to describe the purpose of specific embodiment in instructions of the present invention herein.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
Shown in Fig. 1-2, the LCOS projection ray machine 100 of an embodiment comprises light-source system 110, optically focused mechanism 120, LCOS display system 130, polarisation mechanism 140, imaging amplification light path system 150 and shell 160.
Wherein, be arranged in order and central point altogether light-source system 110, optically focused mechanism 120 and the polarisation mechanism 140 of straight line constitute illumination paths, the straight line at the central point place of light-source system 110, optically focused mechanism 120 and polarisation mechanism 140 is lighting optical axis.
Be arranged in order and central point altogether the imaging of straight line amplify light path system 150, polarisation mechanism 140 and LCOS display system 130 and constitute imaging optical paths, the straight line that the central point place of light path system 150, polarisation mechanism 140 and LCOS display system 130 is amplified in imaging is the imaging optical axis.
The imaging optical axis is vertical with lighting optical axis, and intersection point is the central point of polarisation mechanism 140.Polarisation mechanism 140 divides light-source system 110, optically focused mechanism 120 and imaging equally and amplifies the right angle that light path system 150 constitutes.
Imaging is amplified light path system 150 and is comprised imaging len 152 and the amplifying lens 154 of central point on the imaging optical axis; Imaging len 152 is near polarisation mechanism 140.
Shell 160 is used for ccontaining light-source system 110, optically focused mechanism 120, LCOS display system 130, polarisation mechanism 140 and imaging and amplifies light path system 150.
In the present embodiment, light-source system 110 is 0.57～0.97mm with the spacing distance of optically focused mechanism 120 on lighting optical axis; Optically focused mechanism 120 is 6.0～8.0mm with the spacing distance of polarisation mechanism 140 on lighting optical axis.
In the present embodiment, shown in Fig. 2-4, light-source system 110 comprises aluminium base 112, be fixed in LED lamp 114 on the aluminium base 112, the jam plate 116 of the aluminium base 112 that is used for being fixed and clamped, be opened on the jam plate 116 tapped through hole 118 and with the screw 119 of tapped through hole 118 couplings.
The mode that LED lamp 114 screws by screw thread is fixed on the aluminium base 112, the replacing of convenient follow-up LED lamp 114.Be appreciated that in other embodiments LED lamp 114 also is fixed on the aluminium base 112 by the mode of welding.
When assembling LCOS projection ray machine 100, jam plate 116, be opened in the tapped through hole 118 on jam plate 116 1 lateral edges and will fixedly have the aluminium base 112 of LED lamp to compress with the screw 119 of tapped through hole 118 couplings, and be fixed on the shell 160.In order to make LCOS projection ray machine 100 total qualities lighter and wear-resistant, the material of jam plate 116 is preferably ABS(Acrylonitrile butadiene Styrene copolymers, acrylonitrile-butadiene-styrene copolymer).
In the present embodiment, shown in Fig. 2-4, optically focused mechanism 120 comprises spacer ring 122 and non-spherical lens 124.
The light of non-spherical lens 124 injects face and the light outgoing plane is the convex aspheric surface curved surface.The effect of non-spherical lens 124 is that the pointolite that LED lamp 114 sends is converted into line source, so that follow-up imaging process; In order to alleviate the quality of LCOS projection ray machine 100, non-spherical lens 124 select for use have light weight, inexpensive, be easy to the acrylic eyeglass of advantages such as moulding.
In the present embodiment, as Fig. 2 and as shown in Figure 5, LCOS display system 130 comprises fixed panel 132 and is fixed in LCOS chip 134 on the fixed panel 132.Fixed panel 132 is provided with connector 136, and connector 136 is used for LCOS chip 134 is connected with external device.。
LCOS chip 134 is fixed on the fixed panel 132 by the mode of welding.Connector 136 is used for connecting FPC(Flexible Printed Circuit, flexible PCB) the signal wire (not shown), thus make LCOS chip 134 be connected with external device by the FPC signal wire.The LCOS-MVQ12-2 display chip that LCOS chip 134 is produced for Shenzhen Changjiang Liwei Co., Ltd..
In the present embodiment, polarisation mechanism 140 is DBEF diaphragm (Dual Brightness Enhancement Film, optical brightening membrane), and the DBEF diaphragm is the reflecting type polarizing brightness enhancement film.After incident ray is projected on the DBEF diaphragm, because incident ray becomes miter angle with the DBEF diaphragm, and because the polarization characteristic of DBEF diaphragm, the light of a certain polarization direction does not change the direction of propagation, directly sees through the DBEF diaphragm.The light of a certain polarization direction is after the reflection of DBEF diaphragm, and perpendicular projection is to LCOS display screen system 130.Adopting the DBEF diaphragm to substitute traditional PBS(Polarization beam splitter, polarising beam splitter) diaphragm is as polarisation mechanism 140, and make LCOS projection ray machine 100 have characteristics such as volume is little, quality is light, and be conducive to the reduction of cost.
In the present embodiment, imaging is amplified light path system 150 and is comprised imaging len 152 and the amplifying lens 154 of central point on the imaging optical axis, and imaging len 152 is near polarisation mechanism 140.Imaging len 152 and amplifying lens 154 are oppositely arranged, and imaging len 152 is 16.1～18.1mm with the spacing distance of amplifying lens 154 on the imaging optical axis.Imaging len 152 is positive lens, and focal length is 5.8mm.The light of imaging len 152 injects face and the light outgoing plane is the convex aspheric surface curved surface.Amplifying lens 154 is negative lens, and focal length is-3.05mm.It is recessed non-spherical surface that the light of amplifying lens 154 is injected face, and the light outgoing plane is compound curved surface.Imaging len 152 is used for the image formation by rays after the modulation of LCOS display screen system.Amplification group lens 154 are used for imaging is amplified and output.Because being used of imaging len 152 and amplifying lens 154, thereby make above-mentioned LCOS projection ray machine 100 have bigger projected area with respect to traditional LCOS projection ray machine at short projector distance.In addition, in order to alleviate the quality of LCOS projection ray machine 100, imaging len 152 and amplifying lens 154 are the acrylic eyeglass.
In the present embodiment, shown in Fig. 2-5, shell 160 comprises upper shell 162 and the lower house 164 that is used with upper shell 162.The material of upper shell 162 and lower house 164 is ABS.
Outstanding being provided with and upper shell 162 integrated cavitys on the upper shell 162, cavity contact with upper shell 162 and relative face does not all have wall.The structure of cavity is similar to water pipe, and wall is arranged all around, and two ends do not have wall.Cavity is used for ccontaining light-source system 110 and optically focused mechanism 120, and the position corresponding with tapped through hole 118 is provided with threaded hole on the cavity wall, is used for light-source system 110 and optically focused mechanism 120 are fixed in cavity.
When above-mentioned LCOS projection ray machine was worked, light-source system provided light, and light is projected in the polarisation mechanism after optically focused mechanism handles.The light of a certain polarization direction does not change the direction of propagation, directly sees through polarisation mechanism.The light of a certain polarization direction is after the reflection of DBEF diaphragm, perpendicular projection is to the LCOS display screen system, after the modulation of LCOS display screen system (containing image-forming information), reflex to the DBEF diaphragm and see through the DBEF diaphragm, arrive imaging len, after the imaging len imaging, imaging light (image) arrives amplifying lens, and output after amplifying lens amplifies, finish projection process.Because being used of imaging len and amplifying lens, thereby make above-mentioned LCOS projection ray machine have bigger projected area with respect to traditional LCOS projection ray machine at short projector distance.
The technical parameter of the LCOS projection ray machine shown in Fig. 2-5 is:
Focus LCOS projection ray machine;
Projector distance (center of the one side of the close projection screen of amplifying lens is to the distance of projection screen): 40～50mm;
Projection screen area: (110～120mm) * (86.5～94.36mm);
Screen size: 5.66～5.9 cun;
The depth of field: ± 5.0mm;
Display resolution: 320*240.
Therefore, above-mentioned LCOS projection ray machine can embed in the handheld mobile devices such as mobile phone, digital camera, for handheld mobile device provides bigger projected area at short projector distance.Thereby the image that makes the handheld mobile device that comprises above-mentioned LCOS projection ray machine have high-resolution, high brightness shows.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a LCOS projection ray machine is characterized in that, comprises light-source system, optically focused mechanism, LCOS display system, polarisation mechanism and imaging amplification light path system; Wherein,
Be arranged in order and central point altogether described light-source system, described optically focused mechanism and the described polarisation mechanism of straight line constitute illumination path, the straight line at the central point place of described light-source system, described optically focused mechanism and described polarisation mechanism is lighting optical axis;
Be arranged in order and the described imaging amplification light path system of the common straight line of central point, described polarisation mechanism and described LCOS display system formation imaging optical path, the straight line that the central point place of light path system, described polarisation mechanism and described LCOS display system is amplified in described imaging is the imaging optical axis;
Described imaging optical axis is vertical with described lighting optical axis, and intersection point is the central point of described polarisation mechanism;
Described polarisation mechanism divides described light-source system, described optically focused mechanism and described imaging equally and amplifies the right angle that light path system constitutes;
Described imaging is amplified light path system and is comprised imaging len and the amplifying lens of central point on described imaging optical axis, the close described polarisation of described imaging len mechanism.
2. LCOS projection ray machine according to claim 1, it is characterized in that, described light-source system and the described optically focused mechanism spacing distance on described lighting optical axis is 0.57～0.97mm, and described optically focused mechanism and the described polarisation mechanism spacing distance on lighting optical axis is 6.0～8.0mm.
3. LCOS projection ray machine according to claim 1, it is characterized in that, described LCOS display system and the described polarisation mechanism spacing distance on described imaging optical axis is 4.7～5.7mm, described polarisation mechanism and the described imaging len spacing distance on described imaging optical axis is 2.0～5.0mm, and described imaging len and the described amplifying lens spacing distance on described imaging optical axis is 16.1～18.1mm.
4. LCOS projection ray machine according to claim 1 is characterized in that, described light-source system comprises aluminium base and the LED lamp that is fixed on the described aluminium base.
5. LCOS projection ray machine according to claim 4 is characterized in that, the mode that described LED lamp screws by screw thread or the mode of welding are fixed on the described aluminium base.
6. LCOS projection ray machine according to claim 1 is characterized in that, the spacer ring that described optically focused mechanism comprises non-spherical lens and is used for isolating described light-source system and compresses described non-spherical lens.
7. LCOS projection ray machine according to claim 1, it is characterized in that, described LCOS display system comprises fixed panel and is fixed in LCOS chip on the described fixed panel, and described fixed panel is provided with connector, and described connector is used for described LCOS chip is connected with external device.
8. LCOS projection ray machine according to claim 1 is characterized in that, described polarisation mechanism is the DBEF diaphragm, and the thickness of described DBEF diaphragm is 0.25～0.55mm.
9. LCOS projection ray machine according to claim 1 is characterized in that, described imaging len is positive lens, and focal length is 5.8mm; Described amplifying lens is negative lens, and focal length is-3.05mm.
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| CN2013101361731A CN103235471A (en) | 2013-04-18 | 2013-04-18 | LCOS (liquid crystal on silicon) projection light machine |
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Cited By (5)
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| CN107329353A (en) * | 2017-08-16 | 2017-11-07 | 江苏木盟智能科技有限公司 | A kind of projector mechanism and robot and robot assemble method |
| WO2018000520A1 (en) * | 2016-06-29 | 2018-01-04 | 广景视睿科技（深圳）有限公司 | Dlp projection module |
| CN107567132A (en) * | 2017-08-30 | 2018-01-09 | 苏州佳世达光电有限公司 | Drive circuit, control method and projector |
| WO2019242433A1 (en) * | 2018-06-19 | 2019-12-26 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN112433428A (en) * | 2020-08-18 | 2021-03-02 | 深圳市安华光电技术有限公司 | DLP projector, optical machine and LED light source device calibration method |
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Application publication date: 20130807 |